Question

我编写了一个从数据库用户获取数据的函数，但我收到此错误消息：

24-Nov-2018 15:06:58 UTC] PHP注意：MySQL错误您的SQL语法有错误；检查与您的MySQL服务器版本相对应的手册以获取正确的语法，以在第1行的''附近使用

SELECT积分，0个day_winnings，lifetime_winnings来自5fa_users，其中id =;

在第95行的/home3/jcodedes/public_html/slots/db.php中的

[24-Nov-2018 15:06:59 UTC] PHP注意：MySQL错误您的SQL语法错误；检查与您的MySQL服务器版本相对应的手册以获取正确的语法，以在第1行的''附近使用

SELECT积分，0个day_winnings，lifetime_winnings来自5fa_users，其中id =;

在第95行的/home3/jcodedes/public_html/slots/db.php中

这是代码：

<?php

class Users {

    // This function gets called *a lot*, so it must be very quick to run. Cache stuff if necessary.
    public static function LoggedUserID() {
        return isset($_SESSION['ID']) ? $_SESSION['ID'] : null;
    }

    // Must return credits, day_winnings and lifetine_winnings
    // Day_winnings may be implemented in multiple different ways. The server doesn't implement them as-is
    public static function GetUserData($ID) {
        return DB::SingleRow("SELECT credits, 0 AS day_winnings, lifetime_winnings FROM 5fa_users WHERE id = " . DB::DQ($ID) . ";");
    }

    public static function IncrementSlotMachineSpins($ID) {
        DB::Execute("UPDATE 5fa_users SET spins = spins + 1 WHERE id = " . DB::DQ($ID) . ";");
    }

    public static function DeductCredits($ID, $bet) {
        DB::Execute("UPDATE 5fa_users SET credits = credits - " . DB::DQ($bet) . " WHERE id = " . DB::DQ($ID) . ";");
        // If you have any sort of audit for your user's credits, you want to log into that
    }
    public static function IncreaseCredits($ID, $payout) {
        DB::Execute("UPDATE 5fa_users SET credits = credits + " . DB::DQ($payout) . " WHERE id = " . DB::DQ($ID) . ";");
        // If you have any sort of audit for your user's credits, you want to log into that
    }
    public static function IncreaseWinnings($ID, $payout) {
        DB::Execute("UPDATE 5fa_users SET lifetime_winnings = lifetime_winnings + " . DB::DQ($payout) . " WHERE id = " . DB::DQ($ID) . ";");
        // If you have any sort of audit for your user's credits, you want to log into that
        // If you keep track of day_winnings, you probably want to update them here too
    }

    public static function HasEnoughCredits($ID, $bet){
        $userData = self::GetUserData($ID);
        return ($userData['credits'] >= $bet);
    }

}

我能做些什么来解决这个问题？

Answer 1

您确定word_positions {0: 'zero', 1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five', 6: 'six', 7: 'seven', 8: 'eight', 9: 'nine', 10: 'ten'}返回ID吗？

您会在错误消息中注意到，执行的SQL是：

DB::DQ($ID)

ID为空。 Wich可能表示该函数未返回ID或该函数未接收ID。

为什么我在php函数中出现了sintax错误

1 个答案: